This is a pair of Solo L99 Hi-Flow Cats. These probably have around 2000 miles on them. Includes both O2 extenders, hardware, & both gaskets. O2 threads are clean - these are about as good as they get being used!

I am only selling these because I went to LT's - but I will say I was amazed at the difference in sound and power these made. Definitely one of the better bang for the buck mods you can do (while preserving the warranty). The great thing about the Solo's is they don't throw a code, and you don't need a tune!

I can't say fully because my car is still getting the LS3 conv finished up. I can tell you that these combined with my Flowmaster exhaust were a fair bit louder that the stock cats. But louder in a good sounding way, maybe even a bit deeper in tone.